FLAC - Free Lossless Audio Codec File is simple audio format that comes in handy when you need it the most. This format is very similar to Mp3 which many people may already be familiar with. This audio format is also compressed in FLAC, and you won’t have to worry about losing any quality. This file extension, once added, works just like Zip but with better compression. That is because this format is just for audio. You will be able to play back all of your favorite audio tracks using your favorite player on your computer. You can do the same for these files as you would with an Mp3 track. If you want to add this extension to your files, you can download it online.